TY  - BOOK
AU  - Ramesh,T.N.
AU  - Inchara,S.A.
AU  - Pallavi,K.
TI  - Para-amino benzoic acid–mediated synthesis of vaterite phase of calcium carbonate
SN  - 09743626
AV  - QD31 JOU 
PY  - 2015///
CY  - Bangalore
PB  - Springer
KW  - Calcium carbonate
KW  - Chemical synthesis
KW  - Vaterite
N2  - Calcium carbonate polymorphs were precipitated at room temperature and 80∘C by varying the precipitation pH, carbonate source, effect of solvent in presence and absence of structure directing agent such as para-aminobenzoic acid. Calcite phase of calcium carbonate was obtained when sodium hydrogen carbonate and/or sodium carbonate (used as precipitating agents) were added to calcium chloride solution at different pHs in water and/or methanol as solvent in separate experiments. Vaterite phase of calcium carbonate (CaCO3) has been synthesized by mixing calcium chloride and sodium carbonate in presence of para-aminobenzoic acid when water–methanol binary mixture was used as solvent. Vaterite phase of calcium carbonate crystallizes in P63/mmc, while that of calcite phase in R-3mc, respectively. Calcite phase of calcium carbonate exhibits rhombohedral morphology, while vaterite phase has spherical morphology
UR  - https://doi.org/10.1007/s12039-015-0849-3
ER  -